Walk Method: Consider symlinks as visited only after actually following them (bug #16318)

The bugfix attempt in cac84de5 was incorrect and was adding links to 'processed_links' list preemptively when visiting the link location path. The correct behavior is to add it to the list when visiting the link target path instead.
Signed-off-by: Sean Davis <smd.seandavis@gmail.com>

catfish/CatfishSearchEngine.py

@@ -337,7 +337,6 @@ class CatfishSearchMethod_Walk(CatfishSearchMethod):
                 # Link: ~/.wine/dosdevices/z:/ -> /
                 if realroot.startswith(realpath):
                     continue
-                processed_links.append(realpath)
             if os.path.basename(path).startswith("."):
                 if islink:
                     dotlinks.append(path)